Rational Design and Control of the Dimensions of Channels in Three-Dimensional, Porous Metal-Organic Frameworks Constructed with Predesigned Hexagonal Layers and Pillars

2006 ◽  
Vol 2006 (10) ◽  
pp. 1931-1935 ◽  
Author(s):  
Cui-Jin Li ◽  
Sheng Hu ◽  
Wei Li ◽  
Chi-Keung Lam ◽  
Yan-Zhen Zheng ◽  
...  
Keyword(s):  
Rational Design ◽  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Porous Metal ◽  
Metal Organic ◽  
And Control

Exchange coupled Co(ii) based layered and porous metal–organic frameworks: structural diversity, gas adsorption, and magnetic properties

2020 ◽  
Vol 49 (13) ◽  
pp. 4012-4021 ◽  
Author(s):  
Ajit Kumar Kharwar ◽  
Sanjit Konar
Keyword(s):  
Magnetic Properties ◽  
Gas Adsorption ◽  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Porous Metal ◽  
Structural Diversity ◽  
Two Dimensional ◽  
Metal Organic

A co-operative ligand approach leads to beautiful two-dimensional and three-dimensional architectures with interesting magnetic properties.

Three-Dimensional Porous Metal−Organic Frameworks Exhibiting Metamagnetic Behaviors: Synthesis, Structure, Adsorption, and Magnetic Properties

2010 ◽  
Vol 49 (9) ◽  
pp. 4301-4306 ◽  
Author(s):  
Qun Yu ◽  
Yong-Fei Zeng ◽  
Jiong-Peng Zhao ◽  
Qian Yang ◽  
Bo-Wen Hu ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Porous Metal ◽  
Metal Organic

scholarly journals Degradation Mechanism of Porous Metal-Organic Frameworks by In Situ Atomic Force Microscopy

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 722
Author(s):  
Ioanna Christodoulou ◽  
Tom Bourguignon ◽  
Xue Li ◽  
Gilles Patriarche ◽  
Christian Serre ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Degradation Mechanism ◽  
Metal Organic Frameworks ◽  
Porous Metal ◽  
Force Microscopy ◽  
Atomic Force ◽  
Metal Organic ◽  
The Media ◽  
Ph Conditions

In recent years, Metal-Organic Frameworks (MOFs) have attracted a growing interest for biomedical applications. The design of MOFs should take into consideration the subtle balance between stability and biodegradability. However, only few studies have focused on the MOFs’ stability in physiological media and their degradation mechanism. Here, we investigate the degradation of mesoporous iron (III) carboxylate MOFs, which are among the most employed MOFs for drug delivery, by a set of complementary methods. In situ AFM allowed monitoring with nanoscale resolution the morphological, dimensional, and mechanical properties of a series of MOFs in phosphate buffer saline and in real time. Depending on the synthetic route, the external surface presented either well-defined crystalline planes or initial defects, which influenced the degradation mechanism of the particles. Moreover, MOF stability was investigated under different pH conditions, from acidic to neutral. Interestingly, despite pronounced erosion, especially at neutral pH, the dimensions of the crystals were unchanged. It was revealed that the external surfaces of MOF crystals rapidly respond to in situ changes of the composition of the media they are in contact with. These observations are of a crucial importance for the design of nanosized MOFs for drug delivery applications.

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